[PATCH] remove GET_USE_COUNT

This is a left-over from the old modules code, Rusty stubbed it out
to always return 0.  Three scsi pcmcia driver check it for beeing non-NULL,
trying to work around their unload races.  I've added #warnings there
and stubbed out the GET_USE_COUNT so we can remove it from the core.

drivers/scsi/pcmcia/aha152x_stub.c

@@ -350,12 +350,15 @@ static void aha152x_release_cs(u_long arg)
 
     DEBUG(0, "aha152x_release_cs(0x%p)\n", link);
 
+#warning This doesn't protect you.  You need some real fix for your races.
+#if 0
     if (GET_USE_COUNT(driver_template.module) != 0) {
 	DEBUG(1, "aha152x_cs: release postponed, "
 	      "device still open\n");
 	link->state |= DEV_STALE_CONFIG;
 	return;
     }
+#endif
 
     scsi_unregister_host(&driver_template);
     link->dev = NULL;

drivers/scsi/pcmcia/fdomain_stub.c

@@ -313,12 +313,15 @@ static void fdomain_release(u_long arg)
 
     DEBUG(0, "fdomain_release(0x%p)\n", link);
 
+#warning This doesn't protect you.  You need some real fix for your races.
+#if 0
     if (GET_USE_COUNT(&__this_module) != 0) {
 	DEBUG(1, "fdomain_cs: release postponed, "
 	      "device still open\n");
 	link->state |= DEV_STALE_CONFIG;
 	return;
     }
+#endif
 
     scsi_unregister_host(&driver_template);
     link->dev = NULL;

drivers/scsi/pcmcia/qlogic_stub.c

@@ -329,11 +329,14 @@ static void qlogic_release(u_long arg)
 
 	DEBUG(0, "qlogic_release(0x%p)\n", link);
 
+#warning This doesn't protect you.  You need some real fix for your races.
+#if 0
 	if (GET_USE_COUNT(&__this_module) != 0) {
 		DEBUG(0, "qlogic_cs: release postponed, device still open\n");
 		link->state |= DEV_STALE_CONFIG;
 		return;
 	}
+#endif
 
 	scsi_unregister_host(&driver_template);
 	link->dev = NULL;

include/linux/module.h

@@ -437,8 +437,6 @@ static inline void __deprecated _MOD_INC_USE_COUNT(struct module *module)
 #endif
 }
 #define EXPORT_NO_SYMBOLS
-extern int module_dummy_usage;
-#define GET_USE_COUNT(module) (module_dummy_usage)
 #define MOD_IN_USE 0
 #define __MODULE_STRING(x) __stringify(x)
 

kernel/module.c

@@ -1514,7 +1514,3 @@ static int __init symbols_init(void)
 }
 
 __initcall(symbols_init);
-
-/* Obsolete lvalue for broken code which asks about usage */
-int module_dummy_usage = 1;
-EXPORT_SYMBOL(module_dummy_usage);